Oscillation generator having an amplitude stabilizing circuit

Claim 1

IN AN ELECTRONIC OSCILLATOR THE COMBINATION COMPRISING A FREQUENCY SELECTIVE SIGNAL ATTENUATOR, A RESISTIVE SIGNAL ATTENUATOR, AN AMPLIFIER CONNECTED TO RECEIVE THE OUTPUTS OF THE FREQUENCY-SELECTIVE AND RESISTIVE ATTENUATORS AND ADAPTED TO PRODUCE AN OUTPUT SIGNAL THAT IS RELATED TO THE DIFFERENCE BETWEEN THE SIGNALS AT THE OUTPUTS OF SAID ATTENUATORS, A FEEDBACK PATH TO APPLY THE OUTPUT SIGNAL TO THE FREQUENCY-SELECTIVE AND RESISTIVE ATTENUATORS, A FIRST FORWARD BIASED DIODE CONNECTED IN SERIES WITH THE RESISTIVE SIGNAL ATTENUATORS, A SECOND FORWARD BIASED DIODE, ALTERNATING CURRENT CONDUCTING MEANS SO CONNECTING THE FIRST AND SECOND DIODES IN PARALLEL THAT SUCCESSIVE HALF CYCLES OF THE ALTERNATING POLARITY APPLIED SIGNAL APPEAR IN THE FORWARD CONDUCTION DIRECTION ALTERNATELY ACROSS EACH OF THE DIODES, SAID DIODES BEING CONNECTED TO VARY THE ATTENUATION RATIO OF THE RESISTIVE SIGNAL ATTENUATOR IN RESPONSE TO CHANGES IN THE CURRENT IN SAID DIODES, MEANS PROVIDING FORWARD BIAS CURRENT IN THE FIRST AND SECOND DIODES, A SOURCE OF REFERENCE POTENTIAL, A SWITCH HELD NON-CONDUCTIVE BY SAID REFERENCE POTENTIAL AND BEING CONNECTED TO APPLY THE OUTPUT SIGNAL TO SAID DIODES, SAID SWITCH BECOMING CONDUCTIVE TO VARY THE FORWARD BIAS CURRENT IN SAID DIODES WHEN THE AMPLITUDE OF THE OUTPUT SIGNAL EXCEEDS THE VALUE OF SAID REFERENCE POTENTIAL.